Công ty TNHH công nghệ số Tân Thành

Công tắc mức kiểu điện dung, RF capacitive liquid level transmitter 4~20mA

Công tắc mức kiểu điện dung, RF capacitive liquid level transmitter 4~20mA

  • Đăng ngày 29-01-2019 05:28:55 PM - 245 Lượt xem
  • Mã sản phẩm: RF capacitive 4~20mA
  • RF admittance level transmitter
     
    I. Overview and application:
        The transmitter consists of two parts: detection and transmission. Detected by the probe part of the protective sleeve, sensors; part by the transmitter oscillator, a demodulator, an amplifier, a voltage-current transfertransducer, the instruction sheet, the housing and other components. The oscillator generates an RF voltage and is applied to a bridge composed of an inductor and a capacitor, which is used to compensate the distributed capacitance of the coaxial cable, and is a capacitance formed between the sensor and the material to be tested and the container. In the initial state, the adjustment is made. The size of the variable capacitor, so that the bridge is balanced, the voltage delivered to the demodulator will be zero. When the level in the container changes, the capacity increases, the bridge loses balance, and is then sent to the demodulator. The voltage will not be zero, and proportional to the bridge imbalance, the signal change caused by the level change, processed by the demodulator, amplifier, converted into a linear current 4 ~ 20mADC current with the measured level, remote transmission Centralized control and recording to the control room to realize automatic control of the process flow.
         It can be widely used for continuous measurement of liquid level in petroleum, chemical, metallurgy, medicine, electric power, food, paper and other industrial fields.
    Second, product features:
        Unique circuit design: Reliably measure almost all process media levels without being affected by changes in temperature and humidity on the sensor.
        RF admittance technology: high reliability, versatility, no fragile moving parts, and long service life.
        Wide range of applications: measurement of liquid level, granular materials, viscous materials, mixed media for almost all applications.
        Large measuring range: 300mm~30m is available.
        Simple and convenient to install: easy to debug, low cost, no need to provide separate bypass pipes, sealing materials and various valves, all of which can be installed by overhead.
        Variety of electrodes: highly chemically adaptable probes, rigid, flexible, with heavy hammer or with fastening
        A variety of structural forms: separate, integral, elevated
    Third, technical parameters:
        Installation method: Thread: threaded integrated installation, threaded split installation
        Flange: flange integrated installation, flange split installation
        Measuring range H(m): can be arbitrarily selected within the range of 300mm~30m)
        Working pressure (MPa): 1.6, 2.5, 4.0
        Connection method: pipe thread, flange optional
        Wetted material: probe 316L, 1Cr18Ni9Ti
        Threaded flange: 316, 1Cr18Ni9Ti
        Working temperature: -20~250°C
        Accuracy: +1%
        Input voltage: rated voltage 24VDC minimum input voltage 15V maximum input voltage 32V
        Output signal: 4~20mA two-wire system
        Load resistance: rated load resistance 250Ω
        Ambient temperature: –40 to +75 °C
        Electrical interface: M20 × 1.5 internal thread
        Relative humidity: ≤85%
        Explosion-proof mark: explosion-proof type

    Tình trạng sản phẩm:


    Fourth, product parameters
    Electrode type
    Installation method
    Material
    Pressure
    Temperature
    A
    3/4” NPT
    316S.S
    3.5lkg/cm2
    121 ° C
    B
    3/4” NPT
    Teflon/SS
    3.5lkg/cm2
    121 ° C
    D
    11/4" NPT
    316S.S
    Atmospheric pressure
    121 ° C
    E
    11/4" NPT
    Teflon/SS
    Atmospheric pressure
    121 ° C
    H
    11/4" NPT
    Teflon/SS
    Atmospheric pressure
    121 ° C
    I
    11/4" NPT
    Teflon/SS
    3.5lkg/cm2
    121 ° C
    M
    11/4" NPT
    PVC/SS
    3.5lkg/cm2
    60 ° C
    N
    1"
    Teflon/SS
    3.5lkg/cm2
    121 ° C
    P
    1"
    316S.S
    3.5lkg/cm2
    121 ° C
         

     



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    THÔNG TIN LIÊN HỆ
    CTY TNHH CÔNG NGHỆ SỐ TÂN THÀNH [Bản đồ]
    Trụ sở công ty: Số 37/213 Thiên Lôi, P. Vĩnh Niệm, Q, Lê Chân, TP. Hải Phòng
    VPĐD: Số 185- P Chùa Láng. Q Đống Đa. TP Hà Nội
    Tel: 0225.8830.305  Fax: 0225.8830.305
    Kinh doanh 1: 0917.971.515
    Kinh doanh 2: 0912.969.391
    Kinh doanh 3: 091.686.1515
    Website: http://tanthanhtech.com/
    Website: http://vienthongtanthanh.com/
    Website: http://tanthanh-automation.com/
    Email: tanthanhdigitech@gmail.com

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